11251818 has 16 divisors (see below), whose sum is σ = 25004160. Its totient is φ = 3750588.

The previous prime is 11251817. The next prime is 11251837. The reversal of 11251818 is 81815211.

11251818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 11251791 and 11251800.

It is not an unprimeable number, because it can be changed into a prime (11251817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104130 + ... + 104237.

It is an arithmetic number, because the mean of its divisors is an integer number (1562760).

Almost surely, 2^11251818 is an apocalyptic number.

11251818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11251818 is an abundant number, since it is smaller than the sum of its proper divisors (13752342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11251818 is a wasteful number, since it uses less digits than its factorization.

11251818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208378 (or 208372 counting only the distinct ones).

The product of its digits is 640, while the sum is 27.

The square root of 11251818 is about 3354.3729667406. The cubic root of 11251818 is about 224.0823065945.

The spelling of 11251818 in words is "eleven million, two hundred fifty-one thousand, eight hundred eighteen".